IMCEAMAILTO issue causing "Delivery has failed .."

In , when a user does a reply to some emails the E-mail Type: changes from the normal SMTP to MAILTO and then when the user sends the email it is rejected because either or our is adding to the end of the recipient's email address.

This also happens with emails where the senders address is shown as a clickable option [].

Email address has been changed to for confidentiality reasons.

Delivery has failed to these recipients or distribution lists:

A problem occurred during the delivery of this message. Exchange will not try to redeliver this message for you. Please try resending this message later, or provide the following diagnostic text to your system .


Sent by 2007

Diagnostic information for administrators:

Generating server:
#550 5.4.4 ROUTING.NoNextHop; unable to route ##

Original message headers:

Received: from ([fe80::d597:2413:93ab:cf17]) by ([fe80::d597:2413:93ab:cf17%13]) with mapi; Thu, 14 Oct 2010 13:58:28 +0100
Content-Type: application/ms-tnef; name="winmail.dat"
Content-Transfer-Encoding: binary

To: "''"

Date: Thu, 14 Oct 2010 13:58:27 +0100
Subject: email

Thread-Topic: email

Thread-Index: Actrn34QI8tEGRBCR/qQGIH5MxGgyA==

Accept-Language: en-US, en-GB
Content-Language: en-US
X-MS-Has-Attach: yes

MIME-: 1.0

Solution: Open-mouthed smile

Removing Microsft Word 2007 (KB2344993) from the computer did the trick

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